半导体量子点和碳点基零维/二维异质结光催化剂构筑及应用

张栋琪; 倪俊朋; 陈启涛; 刘艳红; 李丽霞; 毛宝东

doi:10.37188/CJL.20210204

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半导体量子点和碳点基零维/二维异质结光催化剂构筑及应用

特邀报告 | 更新时间：2021-09-03

- 半导体量子点和碳点基零维/二维异质结光催化剂构筑及应用
  增强出版
- Construction and Application of Semiconductor Quantum Dots and Carbon Dots Based 0D/2D Heterojunction Photocatalysts
- 发光学报 2021年42卷第8期页码：1278-1296
- 作者机构：
  
  1.江苏大学　化学与化工学院，江苏　镇江　 212013
  2.江苏大学　环境与安全工程学院，江苏　镇江　 212013
- 作者简介：
  
  [ "张栋琪(1996-)，男，江苏常熟人，硕士，2021年于江苏大学获得硕士学位，主要从事零维/二维半导体量子点基光催化剂的设计与合成及在光催化制氢中应用的研究。Email: 736111980@qq.com" ]
  [ "刘艳红(1981-)，女，湖南邵东人，博士，助理研究员，2009年于中国科学院长春光学精密机械与物理研究所获得博士学位，主要从事基于量子点和二维材料的复合纳米结构的设计、制备及催化应用的研究。Email: liuyh@ujs.edu.cn" ]
  [ "李丽霞(1978-)，女，河北邯郸人，博士，副教授，2013年于南京理工大学获得博士学位，主要从事基于纳米金属和水凝胶等高性能复合催化剂的构筑及环境催化应用的研究。Email: qingpipa@ujs.edu.cn" ]
  [ "毛宝东(1982-)，男，山东荷泽人，博士，研究员，博士研究生导师，2012年于美国凯斯西储大学获得博士学位，主要从事环境友好新型量子点的光电性质调控、超快光谱动力学及光催化和电催化应用的研究。E-mail: maobd@ujs.edu.cn" ]
- 基金信息：
  
  国家自然科学基金(21908081;21501072);江苏特聘教授项目资助
- DOI：10.37188/CJL.20210204
  中图分类号： O482.31
- 收稿：2021-06-08，
  
  修回：2021-06-20，
  
  纸质出版：2021-08-01
- 稿件说明：
移动端阅览
张栋琪, 倪俊朋, 陈启涛, 等. 半导体量子点和碳点基零维/二维异质结光催化剂构筑及应用[J]. 发光学报, 2021,42(8):1278-1296.

Dong-qi ZHANG, Jun-peng NI, Qi-tao CHEN, et al. Construction and Application of Semiconductor Quantum Dots and Carbon Dots Based 0D/2D Heterojunction Photocatalysts[J]. Chinese Journal of Luminescence, 2021, 42(8): 1278-1296.
张栋琪, 倪俊朋, 陈启涛, 等. 半导体量子点和碳点基零维/二维异质结光催化剂构筑及应用[J]. 发光学报, 2021,42(8):1278-1296. DOI： 10.37188/CJL.20210204.

Dong-qi ZHANG, Jun-peng NI, Qi-tao CHEN, et al. Construction and Application of Semiconductor Quantum Dots and Carbon Dots Based 0D/2D Heterojunction Photocatalysts[J]. Chinese Journal of Luminescence, 2021, 42(8): 1278-1296. DOI： 10.37188/CJL.20210204.

摘要

半导体量子点因其具有精准的尺寸调控、独特的光电特性、丰富的表面活性位点等优势，在光催化剂设计和机理研究中获得了广泛关注。与传统半导体量子点主要作为光吸收单元不同，新兴的碳点更是在增加光吸收、促进电荷分离和增加表面反应位点等光催化不同环节均展现出优异的应用潜力。然而，量子点光催化剂由于小尺寸带来电荷复合严重、易团聚、稳定性差等问题而限制了其光催化性能。解决这些问题的主要途径之一是将零维(0D)量子点负载到超薄的二维(2D)纳米片上，形成0D/2D纳米复合材料，使量子点更加分散和稳定，且2D纳米材料促进的加速电荷转移能够抑制光生电荷的复合，从而可以有效地改善量子点基光催化剂的催化活性和稳定性。本文系统阐述了半导体量子点和碳点基0D/2D异质结光催化剂的构筑及应用，着重讨论了不同类型0D/2D异质结的光催化作用机理及面临的挑战，最后对其未来发展进行了分析和展望。

Abstract

Semiconductor quantum dots(QDs) have attracted much attention in the design and mechanism of photocatalysts due to their precise size control

unique photoelectric properties and abundant surface active sites. Unlike traditional semiconductor QDs that are mainly used as light absorption units

the emerging carbon dots show excellent application potential in different aspects of photocatalysis

such as enhancing light absorption

promoting charge separation

and increasing surface reaction sites. However

the small size of QDs photocatalysts also leads to serious charge recombination

easy agglomeration and poor stability

which severely limits their photocatalytic performance. One of the main pathways to solve these problems is to load zero dimensional(0D) QDs on ultra-thin two-dimensional(2D) nanosheets to form 0D/2D nanocomposites

which can make the QDs better dispersed and more stable. The accelerated charge transfer promoted by 2D nanosheets can inhibit the recombination of photogenerated charges carriers

which can subsequently improve the activity and stability of QDs-based photocatalysts. In this review

the construction and application of semiconductor QDs and carbon dots based 0D/2D heterojunction photocatalysts are systematically introduced

with special attention to the discussion of the mechanism and challenges of different types of 0D/2D heterojunction photocatalysts. Finally

future development is analyzed and prospected for the 0D/2D heterojunction photocatalysts.

关键词

Keywords

references

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